Hi,
The whole point of the CPS - colaborative problem solving approach is to teach kids the missing skills they lack. Just having conversations , dailog teachers these skills , focus on perspective taking , looking at the concerns of people , identifying problems and coming up with solutions that are realistic and mutually satisfying , taking into the account possible obstacles etc , and a commitment to review the effectivebess of the solution.
Besides DR Greene's books , the best one in my humble opinion is ' Lost at school ' - great for both parents and teachers , Myrna Shure's parenting books focus on problem solving.
Another favourite is Edward de Bono
http://schoolnet.gov.mt/thinkingskills/thinkingtools.htm
Allan